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Convertible Notes Payable - Summary of Convertible Notes Payable (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Short Term Debt [Line Items] |  |
Convertible notes payable | $ 26,600 | $ 12,159
Accrued interest | 600 | 114
Unamortized debt discount |  | (1,000)
March 2020 Notes |  |
Short Term Debt [Line Items] |  |
Convertible notes payable | 10,000 |
December 2019 Notes |  |
Short Term Debt [Line Items] |  |
Convertible notes payable | 6,000 | 3,045
August 2019 Notes |  |
Short Term Debt [Line Items] |  |
Convertible notes payable | $ 10,000 | $ 10,000

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- Definition Carrying value as of the balance sheet date of the portion of long-term debt due within one year or the operating cycle if longer identified as Convertible Notes Payable. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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